Everybody is good:
When I test 8148 bare board code i2c2_io_expander, the code is from 8148 CD, I use CCS for testing.
But print a message is as follows:
Unable to detect the IO expander on EVM at Slave addr 0x21.
[CortexA8] Unable to initialize the IO Expander for I2C-2 module on the IO Expander board.
[CortexA8] FAIL... error code -1... quitting
I hope to find a better way!!
thanks all .